Sash center



' June 5, 1923. 1,457,323

C. D.' TABOR SASH CENTER Filed Feb. 15. 1921 2 Sheets-Sheet J l y I hI v11% y /lf m I. |Il y Zy M @7% Patented June 5, 1923.

f vv1,1"N1TED, STATES PATENT 'ioFFi1 ,C,E'.--

. CLINTON D. 'JI'.AIBOIR.L OF HUNTINGTON, NEW YORIL. ASSIGNOR OFONE-HALF TQ HERMAN I. SORENSEN, OFNEW :Y`0RK,-N. Y.

sAsH CENTER.

Application-'ala February 15, 1921. serial No. 445,139.

To all whom t may concern.' j Be it known that I, CLINTON D. Tanon, aIcitizen of the United` States, yresiding in Huntington, in the county ofSuffolk, Long 6 Island, New York, have inventednew'and usefulImprovements i in Sash Centers, of which the following is aspecification.

Thisfinvention relates to window? fixtures which are Commonly known assash. centers 10 or pivots and which are designed for pivotally mountinga sash in a: window frameso thatthe sash may be turned or rotated intoan open and closed position. j One of the ob'ects of this invention isthe '15 production of a pivot fixture of this character whichnecessitates removing less wood from the sash rail and thus permits ofusing the same on window sashes having lighter yrails than thoseheretofore used for this purpose. yAnother v'object of this invention isto provide a. tension device in which the spring may be 4co,nstructed ofvfiat spring metal which is vnot liable to become broken in use and'canbe easily replaced at lowl cost;

A still further object ofthis invention is to so` organize the sashcenter that the same will still bein an operative condition eventhough-the dog Aor locking bar is broken into two adjacent tothe axis ofthe sash center. -In thejaccompanying drawings: j

' Figure l is a fragmentary lelevation of the 'sillfand sash of a windowequipped with my invention. Figures 2 and 3 are horizontal sectionstaken online2-3, Fig. l, and looking downwardly and upwardly,respectively. Figure 4 isa vertical Vlongitudinal sectionv of the sashcenterk and adjacent parts of the lsill'andsash embodying myimprovements. Figures, 6 and 7 are vertical transverse 40 sections takenon thecorr'espondingly numbered lines in Fig. 4. Figures 8, 9, l() Aand1l are perspective 'views of the important elementsof the sash center. p

Similar characters of reference refer vto like arts throughoutthe-several views.

A though the sash centery may beinstalled so as to permit asash toturnin-any desired direction inl the frame, the same, for example, isshown'in the drawings interposed between the'sill or lower'hori'zontalmember -20`of a window-*frame and -the' lower horizontal bar or rail2l'of av sash.y Between these relatively stationary'` and rotatableV"window members my improvedsash 'center is mounted, the same/beingconstructed as follows: if

.22, 28 'representtwo attaching plates one of which is securedto thesash vbar or rail and thev other to the frame bar or sill so that A onemay be turned relatively Vto the other. In this' instance both oftheplates l22 and 23 are arranged in a recess 24; in the underside ofthe sash bar and the plate 22 is xedfand secured to they sash rail by'means of screws 25 4and',theplate A23 is rotatable and secured to theframe sill by.v means of screws 26.y The. plate 22k serves as a guidefor a locking bar or dog 27 which is mo-vable into and-out of lockingengagement with the plate 23 and for-'convenience the plates 22 and 23will be hereafter referred to as 4guide l.plates and locking platesrespectively. Thev locking plate 23has its central partdished inwardlyso as to form. an outer chamber or recess 28 on its outer side andon itsmarginl thefsame flanges 29, 3() which projectv inwardly and -form achamberl on the inner sideofj the er 28 is provided with a pivot orbearing opening 32 and around the ylatter,`this bot;-

tom .is'provided with la pluralit'yo-fl guide openings S21-which arepreferablyfour 'in Y' number and arranged equidista'nt."` The'transverse flanges 30 of thefguide plate arel somewhat higher orproject inwardlyl'farther than the longitudinal yflanges 29 and each ofthese transverse flanges is provided'withfa i The locking plate23-'Tests withits'inner l site transverse edgesV are arranged adjacentto the inner side of the transverse lflanges 29. On the central part yofthe `locking plate the same is provided ywith an inwardly pro-V ject-ing tubular-hub'V or pivot sleeve 35 lwhich projects 'the' pivot orbearing opening 32 of the guide plate and forms the a'Xis or fulcrumabout which the guide and locking "plates of the sash center revolve onerelatively to the other. On its inner facel the locking plateisvprovided .withl al plurality of 'lockinggroovea'recesses or notches,

37, l'which radiate from the pivotsleeve' orhub 35 andare preferablyarrangedat 'three dili'rerent angles relatively to each I y 75 isprovided with longitudinal and transverse in the locking plate.

other, although, if desired, more or less may be employed to suitdifferent, conditions or requirements. As shown, the locking grooves 36are arranged lengthwise of the locking plate, the grooves 37 arearranged" transversely and the grooves 38 obliquely and the same areadapted to co-operatc with the locking bar to hold the sash in it'sfullclosed, full open and partly open positions. The locking bar 27 has aWide central part 39 arranged between the guide and locking plates andprovided With a lcentral guide opening 40 which receives the pivotsleeve or hub 35 and vthe opposite ends- 41 of the locking bar are,reduced in width and engage with the guidenotohes 34 in the transverseflanges of the guide plate, whereby the locking bar is guided inmovement parallel With the vaxis about which the locking and guideplates turn relatively. to one another. but the locking bar isheldagainst rotation. On that side of the locking bar facing the guide platethe saine is provi-ded with 'four tension pins or projections 4Q whichextend outwardly through the guide openingsuBB and on its opposite sidefacing the locking plate, this bar is provided with a longitudinallocking rib or tongue 43 which is adapted to engageWith one or anotherset or' locking recesses 36, 37 and 3S lWithin the outer chamber' 28 iSarranged a tension spring-,44 which is preferably made offlexible metaland of square form and engages its margin with the outerends of thetension .pins 42 at di'erent points circumferentially of the spring. Thelocking plate, locking bar and guide plate are held in an assembledposition but perform their respective movements and functions bymeans-Oia coupling bolt 45 which extends transversely through thetubular hub or pivot sleeve and also through an opening 46 in thecenterof the tension spring and. bears with its head 47 against the outer sideof the locking plate While its screw nut 48 bears against .the outer-side of the tension spring.

l/Vhen vthe sash/is closed the tension ot' the spring holds the ribs ofthe locking bar firmly in engagement with the longitudinal grooves 36 ofthe locking A,plate and thus holds the Vsash yieldingly in thisposition. Upon applying sufficient pressure to the sash to turn thesamey out of its normal closed position and overcome the tension of thespring, the co-operating wedge action of the longitudinal grooves 36 inthe lool;- ing plate and the rib of the locking bar causes the latter tobe deliectedL sufiiciently to disengage these ribs and groovesA and holdthe same out of engagementA until-the sash has been turned half openatl' which time the oblique looking groovesgoit the locking plate willbe in line with the locking ribs and permit the latter to be pressedinto the pgagedfrom the oblique locking grooves and then permitted tospring back into the transverse grooves of the locking plate. In likemanner the closing turning movement of the sash will iirst cause thelocking bar tok be first disengaged from the respective groove of thelocking plate and then engaged successively v`vvith the other" lockingnotches of rthe locking plate until the sash is shut. During thismovement of the sash the locking bar moves parallel with the axis aboutwhich the sash turns, the movement in one direction being produced bythe Wedge action ot' the looking ribs and grooves and the movement inthe opposite direction by the resilience ot' the spring.

By constructing the spring of a piece `of flat metal in the manner shownthe thickness ot' the iixture asfa whole can be materially reducedandthus reduce the ldepth of the recess which has to be cut into thesash to receive the same, thereby enabling the iXture to be applied to asash having comparatively narrow rails.

Owing to the square formation of the spring and the engagement of thesame at a plurality of points around the axis of the fixture by thetension pins of the locking bar, the resilience of all parts of thisspring are brought into play, inasmuch as the loo and the straindistributed over the several bearing'points thereby permitting otusing aspring of much smaller area and also lighter Weight than otherwise wouldbe necessary to securethel same amount of tension.

Furthermore, yin the construction g this locking plate and guide plateturn one di rectly upon the other by means of the pivot hubl so that thelocking bar' is entirely independent of these plates and free to performthe sole function of locking the plates in Whatever 4position they maybe left. Owing to this construction, if at any time the locking dogshould break in two at the middle, the pieces of the same Would still beconiined between the plates and performy hav-ing a bearing opening andthe other having ahub journaled directly in said bearing opening, andone of saidplates being providedV with a series of grooves arranged atldifferent angles, a locking bar arranged between said plates, and aspring for holding plates said locking bar yieldingly in engagement withone or another of said grooves.

2. A sash center comprising two plates pivoted directly one upon` theother land adapted to be attached respectively, to the frame and sash ofa window, one of said plates having flanges provided with notches, andthe other plate being provided with locking. grooves arranged atdifferent angles, a locking bar guided at its end in said notches andprovided with a locking rib, and a spring for inoving said bar in thedirection :tor engaging its ribs with said grooves.

3. A sash center comprising two plates adapted to be attached,respectively, to the trame and sash of a Window, andsaid plates beingdirectly pivotally connected with each other, one of said plates havinga plurality of locking grooves arranged at diiterent angles, a lockingbar adapted to engage said grooves, and a tension spring engaging saidlocking bar at ldifferent points around the pivotal connection betweensaidl plates.

4. A sash center comprising two plates adapted to be attached to theframe andsash of a window, one of said plates having a bearing opening,and the other a pivot hub engaging with said bearing opening and also aplurality of locking grooves arranged at different angles, a locking barprovided with a locking rib adapted to engage with one or another ofsaid grooves and having a. plurality'of tension pins arranged aroundsaid hub, a Hat spring engaging diii'erent parts of the margin with saidpins, and a bolt connecting said .spring with the plate having saidlocking grooves.

5.'.A sash center comprising two plates adapted to be attached to theframe and sashv of a window, one of said plates having a n bearingopening, and the other Aa pivot hub engaging with said bearing openingand also a plurality ot'locking grooves arranged aty different angles, alocking bar `provided with a locking rib adapted to engage with y one oranother of said grooves andhaving a` plurality of tension pins arrangedaroundv said hub, a hat .spring engaging different parts of thev marginwith said pins, and a bolt arranged axially in said hub vand con-ynecting the spring` with. the plate having said hub and grooves.

6. A sash center. comprising two plates adapted to be connectedrespectively with" bearing opening, andthe other plate being providedwith a pivot hub ywhich is journaled iny said bearing opening and aplurality of locking grooves which are arranged at different angles, alocking bar arranged between Saidplates and` provided with a rib adaptedto engage with one or another of said grooves and also with a pluralityof tension pins projecting through said guide openings, a flat `metalspring arranged in said outer chamber and engaging different parts ofits margin with' the ends of said pins, and a bolt arranged in said huband connecting the central part of said spring with the plate havingsaid hub.

, CLINTON D. TABOR.

